the built-in storage
e.g:
some devices comes with 32 GB, that's it's internal storage
More information is needed to answer this question properly. Questions such as: what kind of phone? Was the phone purchased through a carrier? Was it modified in any way? How much storage (internal) is left on the phone? Do you have several apps running in the background?
One can download FolderSync for their Android phone in the Google Play store, or on the FolderSync website. FolderSync is a cloud storage application.
Too many apps installed; try moving apps to S D card of your Android phone / device.
For apps, probably the best option is to get a third-party app to transfer apps from your Android device's internal storage to external (microSD) storage. App2SD and others can move those files for you, and can also tell you if an app can only run on internal storage. For photos and video, you can typically configure your camera app to store them to either internal or external as a default.
It depends on the model of the phone. If a phone has a slot for a memory card - simply buy a suitable memory module and insert it into the slot. If your phone has no expansion slot, you're stuck with whatever memory the device has.
It depends what phone you have, each phone has a different internal storage capacity (built into the phone) and external capacity (storage that you can remove) which could change the amount greatly.
Never mind fixed it
Look into your system settings, then look at storage. Check to see if your internal storage and external storage (assuming your phone has that) is displaying. If, as in the case of external storage, you have an microSD/SD card installed, but it isn't displaying, you might want to try this method. Unmount the SD card, then after it says it's been unmounted, physically remove the card, then reinstall it. After that, mount the SD card. If that still doesn't work, the card itself may be faulty.
Yes the GT540 is a android phone. it is the new android 2.1 phone from LG.
Nope!
It is an android phone.
HTC is a recent brand of cell phone manufacturer. They are known for their Droid Incredible cellular phone. It follows the Verizon service plan. It is a compact, lightweight sized phone with OLED full color display, Android platform, 6.4 GB internal storage. This phone has great connectivity options such as BlueTooth, WiFi, and USB.